Primary or pilot burner



H. 0. BAKER.

PRIMARY 0R PILOT BURNER. APPLlCATlON FILED MAR. 25, 1918.

1,324,000. Pate ted Dec. 2,1919.

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.0 fifforney H. O. BAKER.

PRIMARY 0R PILOT BURNER. APPFICATION FILED MAR. 25. 1916.

1,324,900., Patented Dec. 2,1919.

2 SHEETS-SHEET 2.

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HARTLEY O. BAKER,

CAR AN D 0F PUEBLO, COLORADO, ASSIGNOR TO THE BAKER STEAM MOTOR MANUFACTURING (30., INC., OF PUEBLO,

COLORADO.

PRIMARY OR PILOT BURNER.

Patented Dec. 2, 1919.

Application filed March 25, 1918. Serial No. 224,599.

To all whom it may concern:

Be it known that I, HARTLEY O. BAKER, a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented certain new and useful Improvements in Primary or Pilot Burners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention is in mary or pilot burner designed for use in connection with the main burners of motor vehicle steam generators and particularly with my main burner for such generators, which has been the subject of a separate application for patent, filed February 26, 1918, Serial Number 219284.

The primary object of this invention is to increase the eiliciency of such primary or ,ilot burners and to insure against failure or defective operation, and in connection with this object, a further object is to so construct such burners that while surely operative, their construction will be economical, strong and simple.

With these objects consists in the improved construction, arrangement and combination of parts hereinafter fully described and afterward particularly claimed.

In order that the construction and operation thereof may be readily comprehended, I have illustrated a preferred embodiment of my invention in the accompanying drawings, together with a slight modification thereof, and will now proceed to fully describe the same with particular reference to said drawings, in which,

Figure 1 represents a top plan view of my burner complete Fig. 2, .aceritral, vertical, longitudinal Fig. 6, an elevation of the left hand end of the structure as shown in Figs. 1 and 2,

Fig, 7, an ele ational ne of the right the nature of a pri- 1 by any suitable fastening means,

in view, the invention chamber ing portion and into view, of the upper part of the burner, removed from the body,

hand end of the structure as shown in Figs. 1 and 2, a

Fig. 8, a sectional view taken on a transverse vertical plane through the complete structure,

Fig. 9, a top plan view of the lower por-' tion or body of the burner in a modifie form.

Like reference characters parts wherever they occur figures of the drawings.

' Referring specifically to the drawings 11 indicates the main body of the burner, of box form and preferably of rectangular shape, and open at the top, over which open top is laid a plate 12, upon which is superposed the upper portion (or which we may denominate the top) three parts being rigidly secured mark the same in the several together such, for example, as screws 14.

The box-like body 11 has, formed preferably integral with one end thereof, a centrally positioned part or lug 15, with which is also preferably integrally formed a wall 16, reaching from the body and of a shape to form, with an integral, end, inner wall 17, an elongated chamber 18 and an open ended pipe 19 extends through said wall 17 into the chamber, giving a free communication between the 18 and that portion 20 of the body surrounding the chamber, and which 'surrounding portion has communication with airusually preheated-through an opening 21 in an end wall of the body 11.

The chamber 18 is open at its top'and said open top is of the same outline as opening 22 in the separating plate 12, Fig. 4, so that said plate entirely covers the surround- 20 of the body but does not interfere with or obstruct the open top of the chamber 18.

13 of the burner, these i the top to the bottom of The top or upper portion 13 of the burner is supported upon the top of the separating plate 12, and the securing screws 14 pass through holes 23 in the edges of the top 13 and similar openings 24 in the edges of the separating plate12, (see Figs. 2, 4, and 5), threaded holes 25 in that portion of the end of the main body over the top of the opening 21 as seen in Fig.2, and the opposite corners as in Figs. 3 and 5.

The top 26 of tumor is of su t nt ally sem ylindrical the upper portion 13 of the temperature of the verse connection 35 with shape and is provided with a series of transverse slits 27, the function of which will be later described.

At 28 is shown a baflie plate and smaller ones at 29', the former being transverse and the two latter, longitudinally located with reference to the upper portion 13 of the burner and all being preferably integral with said portion 13.

At 30, on each side of the upper portion 13 is formed a semi-cylindrical longitudinal shelf, for purposes hereinafter explained.

F ormedat one end of the main body 11 is a short length of large pipe or a cylinder 31 through which projects a needle valve 32 which extends into and serves as a cut-off valve in a tip 33 opposite the open receiving end of pipe 19.

At 34 is a longitudinal pipe which rests on one of the curved or semi-cylindrical shelves 30 and which is joined by a transanother longitudinal pipe 36 which rests in the other or opposite curved shelf 30, the end of the pipe 36 opposite to the cross connection 35 being joined by a branch 37 to the large pipe of cylinder 31.

In operation, the gas or liquid fuel passes through pipes34, 35 and 36 in close contact with the upper portion 13 and close to the ends of the slits 27 and then passes through the branch 37 into and through thecylinder 31 and the tip 33 and into the pipe 19, being here mixed with the air, preferably preheated, which passes through opening 21 and thence into and through space 20 around the wall 16 of chamber 18, whence the mixed air and gas passes upward, through chamber 18 and upper portion 13 of the burner, and passes through the slits 27, on the outside of which it is ignited and serves to heat pipes 34, 35 and 36 and the main burner to which the pilot burner is connected.

In passing through to the tip 33 from the cylinder 31, the gas or fluid fuel is heated by means of an electric coil 38 so that when it mixes with the pre-heated air, the high mixture will be maintamed.

In the modification illustrated in Figa9, the parts which are unchanged are marked with the same reference character as in the other figures, but the inner walls 16 of chamber 18 are omitted, as well as the opening 21, and a wall 17 extends entirely across the body 11 forming a rectangular chamber 18 into which the pipe 19 projects and discharges the gas or other fuel through tip 33. The" preferablypre-heated air passes in through two openings 21 into two pipes 21 which extend through chamber 18 and wall 17 and are then turned inward at 21 to discharge the air into the stream" of gas leaving the tip 33 from whence the mixture provided with passes through pipe 19 into chamber 18 whence it passes up to and through the slits, as before described.

Having thus fully described my invention, what I claim as new and desire to secure by Letters States is 1. A burner comprising a main body pro vided with .an air inlet at one end, a top provided with burner or flame slits, an air heating chamber disposed beneath and in Patent of the United communication with said top, and means for of and through the ii ii vided with an air inlet at one end, a top providedv with burner or flame slits, an air heating chamber disposed beneath and in communication with said top, a mixing chamber projected into said heating chamber, means for the flow of air from said inlet around said heating chamber to said mixing chamber, a fluid feed disposed to discharge into said mixing chamber, and an electric heater at the discharge from the said fluid feed.

4. A burner comprising a main body, a smaller air and fluid mixing chamber in the body and open at the top, a plate closing the top of that part of the main body surrounding the chamber, and a top portion, with open bottom, surmounting the plate, burner slits, communicating with the open top chamber.

5. A burner comprising a main body, a smaller air and fluid mixing chamber in the body and open at the top, a plate closing the top of that part of themain body surrounding the chamber, a top portion with an open bottom surmounting the plate and provided with burner slits, andvfluid conducting pipes surrounding the top portion in proximity to the slits.

6. A burner comprising an air and gas compartment having a tapering top provided with transverse burner slits therethrough, longitudinal shelves extending outwardly at each side of the top below the and a fluid supply com- 4 ends of said slits,

prising pipes resting upon said shelves.

burner comprising an air and gas compartment having a tapering top provided with transverse burner slits therethrough, longitudinal shelves extending outwardly at each side of the top below the ends of said slits, a fluid supply comprising rounding and spaced from said top. 8. A burner comprising an air. and

. as 5 compartment having a curved top provided with transverse burner slits therethrough, a v transverse bafile plate spaced from one end .0 of saidtop, longitudinal shelves extending at each side of the top, and a fluid supply bafl'le plate, the opposite ends of said pipes being connected respectively to a fluid supply and the air and fluid compartment of the burner.

10. A burner comprising a body having an air heating chamber, a top over the chamber having outlets, an air inlet and fluid feed at horizontally opposite portions of the air heating chamber said chamber having an inlet for fluid and air adjacent to said fluid 10 comprising pipes resting upon said shelves and connected at one end by a transverse branch-parallel With and adjacent said baflle .Pl &t(}

' T 9. A burner comprising an air and fluid 15 compartment having a curved top provided with transverse burner slits therethrough, a

. transverse baflie plate spaced from one end of said top, longitudinal shelves extending at each side of the top, and a fluid supply 2 comprising parallel pipes resting upon said shelves and connected at one end by a transverse branch parallel with and adjacent said feed, and means for the passage of air horizontally from the air inlet along the sides of the air heating chamber to the fluid and air inlet of said chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

HARTLEY O. BAKER.

Witnesses: v

SARA MCKENZIE, PAULINE S. BROWN. 

